A `Hypernova' model for SN 1998bw associated with gamma-ray burst of 25 April 1998

K. Iwamoto, P. A. Mazzali, K. Nomoto +24

The discovery of the peculiar supernova (SN) 1998bw and its possible association with the gamma-ray burst (GRB) 980425${}^{1,2,3}$ provide new clues to the understanding of the explo…